Patents Represented by Attorney D. A. Newell
  • Patent number: 4436614
    Abstract: A desulfurizing and dewaxing process which can be performed in a single reaction vessel is disclosed.The desired lowering of oil partial pressure for dewaxing zone is accomplished by adding diluent gas to the HDS-zone effluent, thus obviating the need for other means to maintain differing oil partial pressures between serial catalyst zones.
    Type: Grant
    Filed: October 8, 1982
    Date of Patent: March 13, 1984
    Assignee: Chevron Research Company
    Inventors: Hazel C. Olbrich, Dennis J. O'Rear, John A. Zakarian
  • Patent number: 4435416
    Abstract: Compounds of the formula: ##STR1## wherein Y is chloro or bromo; X is --S--, --SO-- or --SO.sub.2 --; and R.sub.1 and R.sub.2 are independently hydrogen, alkyl, cycloalkyl, lower alkenyl of 3 or more carbon atoms, alkylene carbalkoxy or aryl or aralkyl optionally substituted with one or two substituents each independently selected from halogen, nitro, cyano, lower alkyl, lower alkoxy, trihalo substituted methyl and phenoxy are fungicidal and/or intermediates in the preparation of fungicides.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: March 6, 1984
    Assignee: Chevron Research Company
    Inventor: Edward I. Aoyagi
  • Patent number: 4435547
    Abstract: Poly-2-pyrrolidone polymer and compositions having improved thermal stability via the capping of at least a portion of the amino and/or carboxy end group of the polymer and processes for preparing such polymers and compositions. The processes are characterized by the reaction of the polymer with alkanolamines and/or alkyl polyamines. The products afford improved melt processability.
    Type: Grant
    Filed: February 9, 1983
    Date of Patent: March 6, 1984
    Assignee: Chevron Research Company
    Inventors: Gar L. Woo, Phillip H. Parker
  • Patent number: 4435283
    Abstract: A method of dehydrocyclizing alkanes is disclosed wherein the alkanes are contacted with a catalyst containing a large-pore zeolite, a Group VIII metal, and an alkaline earth metal. The amount of Group VIII metal and the amount of alkaline earth metal present in the catalyst are adjusted so that the selectivity for n-hexane of the dehydrocyclization reaction is greater than 60%.
    Type: Grant
    Filed: February 1, 1982
    Date of Patent: March 6, 1984
    Assignee: Chevron Research Company
    Inventors: Waldeen C. Buss, Thomas R. Hughes
  • Patent number: 4435278
    Abstract: A process for hydroprocessing a hydrocarbonaceous feedstock containing constituents boiling above 350.degree. C. comprises contacting said feedstock with hydrogen under hydroprocessing conditions with a catalyst composition comprising a rigidly interconnected pack containing inorganic matrix oxide and about 10-95% fluid catalytic cracking catalyst microspheroids, based upon the total weight of said matrix oxide and said microspheroids, said pack characterized by a pore volume of at least 0.15 cc. per cc., at least about 30% of said pore volume present as pores having diameters within the range of 50-250 Angstroms and at least about 5% of said pore volume present as pores having diameters greater than 1,000 Angstroms.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: March 6, 1984
    Assignee: Chezon Research Co.
    Inventor: Hong C. Chen
  • Patent number: 4435273
    Abstract: Disclosed is a process for reducing the fouling in a heat exchanger in which a hydrocarbon stream is heated or cooled as it passes through the heat exchanger. From 1 to 500 parts per million of an alkylamino alkylphenol is added to the stream to reduce fouling.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: March 6, 1984
    Assignee: Chevron Research Company
    Inventors: Richard L. Ferm, Louis R. Kray
  • Patent number: 4434141
    Abstract: A method of recovering metal values from an aqueous stream. The metal values are preferably obtained from leaching spent hydroprocessing catalysts, and include nickel, cobalt, vanadium and molybdenum. The metal values are extracted, isolated and purified by liquid, liquid extraction techniques.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: February 28, 1984
    Assignee: Chevron Research Company
    Inventors: Gale L. Hubred, Dean A. Van Leirsburg
  • Patent number: 4434311
    Abstract: A method is disclosed for the dehydroisomerization of alkylcyclopentanes using a catalyst comprising a large-pore zeolite, a Group VIII metal, and an alkaline earth metal.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: February 28, 1984
    Assignee: Chevron Research Company
    Inventors: Waldeen C. Buss, Thomas R. Hughes
  • Patent number: 4434140
    Abstract: A method of stripping an organic extraction solvent containing quaternary alkyl ammonium complexes. The extraction solvent is contacted with an aqueous stripping solution having at least 75 g/l bicarbonate ion, while maintained at between pH 7 and 9 at a temperature of no more than 50.degree. C.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: February 28, 1984
    Assignee: Chevron Research Company
    Inventors: Gale L. Hubred, Dean A. Van Leirsburg
  • Patent number: 4434147
    Abstract: Sulfur oxide and nitrogen oxide control by use of a sulfur sorbent and sulfur dioxide oxidation promoter in the regenerator and downstream removal of nitrogen oxides by selective catalytic reduction using ammonia injection and trapped cracking catalyst fines.
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: February 28, 1984
    Assignee: Chevron Research Company
    Inventors: William L. Dimpfl, William A. Blanton
  • Patent number: 4432861
    Abstract: Particulate hydrocarbonaceous feed mixed with heat-transfer solids in chute with spouting gas and weir prior to introduction into packed bed for retorting.
    Type: Grant
    Filed: March 17, 1983
    Date of Patent: February 21, 1984
    Assignee: Chevron Research Company
    Inventor: P. Henrik Wallman
  • Patent number: 4432953
    Abstract: A process for enhancing recovery of cobalt from spent hydroprocessing catalysts when the spent catalyst particles are first roasted at between 400.degree. C. and 600.degree. C. and then contacted with a first aqueous solution of ammonia and an ammonium salt to recover nickel, cobalt, molybdenum and vanadium. The once-leached spent hydroprocessing catalysts are contacted with a second aqueous solution of sulfur dioxide. The metal values are precipitated with hydrogen sulfide and the precipitate is roasted with unroasted spent hydroprocessing catalysts.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: February 21, 1984
    Assignee: Chevron Research Company
    Inventors: Gale L. Hubred, Dean A. Van Leirsburg
  • Patent number: 4432949
    Abstract: A process for separating metal values from an aqueous stream containing vanadium, molybdenum, nickel and cobalt. Vanadium is first precipitated, and then nickel, cobalt, and molybdenum are removed by serial ion exchange.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: February 21, 1984
    Assignee: Chevron Research Company
    Inventors: Gale L. Hubred, Dean A. Van Leirsburg
  • Patent number: 4432786
    Abstract: Compounds of the formula: ##STR1## wherein R.sup.1 is H or alkyl; R.sup.2 and R.sup.3 are independently H, alkyl, aryl or substituted aryl; R.sup.4 is H or alkoxycarbonyl; R.sup.5 is H, acyl or a cation; and Z is thienyl or substituted thienyl.The compounds exhibit grass herbicide activity and are prepared via the reaction of the appropriately substituted cyclohexane-1,3-dione with the appropriate thienylmethoxyamine derivative and optionally acylating this product at the 3-hydroxy position or converting it to the cation salt.
    Type: Grant
    Filed: May 10, 1982
    Date of Patent: February 21, 1984
    Assignee: Chevron Research Company
    Inventor: William Loh
  • Patent number: 4431514
    Abstract: Disclosed is a process for reducing the fouling in a heat exchanger in which a hydrocarbon stream is heated or cooled as it passes through the heat exchanger. From 1 to 500 parts per million of the reaction product of a polyalkylene amine and a hydroxy fatty acid are added to the stream to reduce fouling.
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: February 14, 1984
    Assignee: Chevron Research Company
    Inventor: Richard L. Ferm
  • Patent number: 4431552
    Abstract: Disclosed is an alkali-metal borate containing lubricant which also contains a phosphate, monothiophosphate and dithiophosphate in a critical ratio.
    Type: Grant
    Filed: November 26, 1982
    Date of Patent: February 14, 1984
    Assignee: Chevron Research Company
    Inventor: Christopher G. Salentine
  • Patent number: 4431344
    Abstract: A compliant offshore drilling and producing structure is disclosed. Axial piles extend from articulated joints on a pile base at the sea floor to above the water's surface and are enveloped by sleeves extending downwardly from a rigid platform. Buoyant chambers attached to the sleeves support most of the platform weight and provide righting stability. The platform weight is supported by the axial piles through hydraulic means.
    Type: Grant
    Filed: June 19, 1981
    Date of Patent: February 14, 1984
    Assignee: Chevron Research Company
    Inventors: Barry J. Abbott, William H. Silcox
  • Patent number: 4431826
    Abstract: An improved process for the preparation of alkenyl succinic anhydride from maleic anhydride and a mixture of straight chain alpha olefins in the C.sub.13 to C.sub.22 range which comprises separating the alpha olefins into a lower boiling fraction and a higher boiling fraction, isomerizing the higher boiling fraction, recombining the two fractions and reacting them with maleic anhydride.
    Type: Grant
    Filed: August 20, 1982
    Date of Patent: February 14, 1984
    Assignee: Chevron Research Company
    Inventor: William A. Sweeney
  • Patent number: 4428753
    Abstract: A continuous process for blending isopropanol from an aqueous solution of isopropanol directly into a stream of gasoline blending hydrocarbon by mixing the aqueous solution and the gasoline, rapidly separating the resulting mixture into two phases, for example, by passing it through water coalescer means and recovering the organic phase which consists essentially of the gasoline and isopropanol.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: January 31, 1984
    Assignee: Chevron Research Company
    Inventor: Susan A. Bezman
  • Patent number: 4428828
    Abstract: A process for upgrading oils is disclosed, in which the oil to be upgraded is contacted with liquid phase water and free oxygen at an elevated temperature and at a pressure sufficient to maintain at least part of the water in the liquid phase.
    Type: Grant
    Filed: November 25, 1981
    Date of Patent: January 31, 1984
    Assignee: Chevron Research Company
    Inventor: Phillip R. Bose